Paper-carriage for type-writing machines.



T. L. KNAPP. PAPER CARRIAGE FOR TYPE WRITING MACHINES. APPLI'OATIUH FILED Minn, 1910.

981 .927. Patented Jan 17,1911.

UNITED STATES. PATENT O FICE. 7

rrxnnoiii L. imam, or woons'roox, nILI'NoIs, assxenon TOITHE OLIVEETYPEWBITER:

COMPANY, or enxeaeo, ILLINOIS, A CORPORATION OF- ILLINOI.

I To ellwhomit meg concern:

' of Woodstock, in the county of McHenry- PAPERPCARR'IAGE FOR TYPE-WRITING IWZAGI-IINES.

Be it known that I, Tnnnox L. Knarr, a citizen of the United States, and a resident and; State oflllinois, have invented certain new and useful Improvements in Paper- Carriages for Type-lWriting' Machines; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawingsgand to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements ...in paper-carriages for typewriting machines and particularly to certain novel features of construction 'of the means for supporting the rear presser roller which acts to grip or hold the paper against the surface of the platen where the advance edge of the paper first comes intocontact with theplaten in the act of inserting a sheet.

The invention herein is shown as applied to a typewriter of the Oliver type, sub stantially as shown in Letters Patent of the United States No. 599,868, granted March 1st, 1898, to Thomas Oliver, butit isto be understood that it is not limited to this fornr of typewriting machine and may be applied-to other t-ypewl'itiug machines as I well.

The invention consists of the matters hereinafter described and more particularly pointed out in the appended'claims.

In the drawings Figure 1 is a vertical cross-section through a typewritiing machine paper carriage-provided with my improve' nents, the section being taken near the left hand end plate of the paper ca'rriage. Fig. 2 is a partial bottom plan View of the paper carriage. Fig. 3 is a vertical section througl'i Fig. 1 on the line 38 thereof. Fig; 4 is a Iperspectiye View of one ofthe leaves 'of the spring arms which support the presser.

roller.

.In the drawings,-10 indicates the papercarriage, as a whole; 11, t-he platen; 12, 12% the upper and lower paper-guides; 13 and 1st, the-front and rear bars, respectively, of

the paper-carriage; 10 theleft hand end a t plate; and-15, the rear presser roller'which adapted to hold the paper against the platen Where the advance edge of the paper platen when firstcomes into. contact with the the sheet is. fed thereto.

- Specification of Letters Patent. Application filed July 11, 1910, Serial No. 571,329. l

.presser roller against the platen.

Patented Jan. 17, 1911.

Thepresser roller 15 is rotatably mounted at its ends in bearing blocks 15 carried at the forward, free ends of I horizontal spring arms 16 which are located at the opposits ends of the carriage frame and are rigidly attached to said frame at their rear ends; Said spring arms cause the presser roller to press the paper firmly against the platen. Each spring arm comprises an upper leaf 16'which is ri idly secured to the top of its associated bearing block 15 and a lower leaf 16 upon which the upper leaf 16 rests. Said upper and lower spring leaves contact throughout their length and rtlL'G secured at their rear ends to a lug on the arm is located a lug 14 formed on the en plate 10 of the carriage and through said lug is threaded a set-screw 14 which engages the under side of said arm. By this construction the position of the forward ends ofthe sprlng arms may be adpisted so as to produce the desired pressure of the A jam nut 14; looks the set-screw "when it has been properly adjusted. 5

The lower leaf 16 of the spring arm 16 a transverse lug 17 (see Fig. 4). which extends parallel to the axis of the presser rollcr'15 and engages the end of its asso'c1- ated bearing block 15 (see Fig. 2). Said lug is threaded to receive a bolt 18 having a head .18 which engages against the inner surface of the end plate 10 of the'carriage. The lug 17'and the bolt 18 thus together constitute a floating thrust member interposed between the opposing faces of the end plate 10 of the carriage and the bearing block 15*, which serves to talge up the shock due to a sudden stoppage of the carriage, as in the case of machines provided with tabulating attachments when the movement of the carriage is arrested by engagement with the fixed stop member, and prevents the presser roller from being displaced endwise. By adjustingthe bolts 18. the ahutments may be made to exactly fill the spaces between thebea ring blocks and the end plates without binding and thus preventing the presser roller from being depii'bsscd f om the platen when desired.

rolled on itself at its forward end to form has passed beyond the presser roller 15. Said guide plate has rear extensions l9 at each end which are secured to the free forward ends of the'spring arms 16 in the usual manner. The forward ends of the spring I arms are adapted to be depressed to withdraw the presser roller from its engagement with. the platen by means of the usual rockshaft 20 providedwith arms 20* which,

- thereof which when the rock-shaft is rotated forward, strike against the top of the spring arms 16 and depress them. Said rock-shaft is op erated by a rock-arm 20 secured to the end carriage.

I claim as my invention 1. In a typewriting machine, in combination with a paper-carriage having a frame including end plates, and a' platen mounted in said frame, of a presser-roller located be ne'ath and pressing upwardly againstsaid laten s rin arms' attached' at their rear ends to the carriage frame, bearing blocks for said presser roller carried at the forward free ends of said springs, and floating thrust members carried by said spring arms interposed between said bearing blocks and said end plates.

2. In a typewritmg machine, in combinat on with a paper-carriagehaving a frame including end plates, andav platen mounted in said frame, "of a prcsser roller located beneath and pressing upwardly against said platen, spring ari'i'isattziehergl at their rear ends to the carriage frame, bearing blocks for said presser roller carried at the forward free ends of said springs, andfloating thrust members carried by said spring arms, interposed between sa1d bearing blocks and said endplates, said thrust members being adjust able in length.

In a typewriting machine, in combinaprogects beyond the paper sense? tion with a paper-carriage having a frame including end plates, anda platen mounted therein, of a presser roller located beneath and pressing upwardly against said platen, spring arms attached tothe carriage frame,

bearing blocks for said presser roller carried by said spring arms, and lugs carried by said spr ng arms ad acent to said bearing blocks, said lugs engaging at one end. against said opposite ends with adjustable parts adapted to engage said end plates to prevent endwise movementof said presser roller 5. In a typewriting machine, in combination with a paper-carriage having a frame including end plates, and a platen mounted therein, of a presser roller located beneath and pressing upwardly against said'platen,

spring arms rigidly attached at their rear ends to the carriage frame, vertically adjustable supporting members carried by carriage frame adapted to supportsaid spring arms forward of-their rearward ends, bearing blocks for said presser roller carried b 7 said S')Ii1l' arms at their forward free ends, lugs carried by said spring arms'adjacent to said bearing blocks andadapted to engage the outer ends of said bearing blocks, and. adpistable partssecured to the opposite ends of said lugs adapted to engage against the inner face of saidend plates of the carriage frame.

6. In a typewriting lllilClllllQ, 1n combination with a paper-carriage having a frame including end plates, and a platen mounted therein, of a. presser roller located beneath and pressingupwardly against said platen,

spring arms attached to the carriage frame, bea r1 n g blocks for said presser rollercarried by said spring arms, saidfsprin'g arms-each bearing blocks and being provided at their including a leaf having its free-endnttached to said bearing block, and a second leaf. provided at its-forward end with alug engagln'g the outer end 'of said bearing blockganda. bolt orscrew threaded into'said lug adapted to engage against the inner face-0f the end plateot the paper-carriage.

In testimony, that I, claim the foregoin .as my invention 1 atfix'my signature in the this 30th" day of presence of two XVltIlQSFES, June A. D. l910.-

. THERON L, KNAPP.

\Vitnesses:

A. J. M ULLEN, B. C. Yon'ne. 

